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A Methodology for techno-economic comparison of PV inverter structure topologies :

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dc.contributor.advisor Rodrigo A
dc.contributor.author Kularatne LBSN
dc.date.accessioned 2020
dc.date.available 2020
dc.date.issued 2020
dc.identifier.uri http://dl.lib.uom.lk/handle/123/16761
dc.description.abstract Sri Lanka’s recent energy policies are focused on promoting economically viable solar power generating schemes introducing novel market segments. It’s envisioned to ensure nation’s energy security while promoting utilization of indigenous energy generating resources. Recent 1 MWp solar power development scheme is one such novel market segment. PV inverters play a significant role in any PV plant performance. Lack of research on identifying the technically and economically most suited PV inverter architecture has caused high risk of failed project objectives. Following research presents a comprehensive framework for a techno-economic comparison of different PV inverter architectures which are central inverters, string inverters, micro inverters and power optimizer systems. 1 MWp capacity PV plant models are designed for analytical purposes of the research. Technical aspects such as energy yield, safety aspects, power output quality, reliability and performance monitoring are assessed using simulation tools (PVSyst, PSCAD and MATLAB), field data analysis, Cost Priority Number method and Markov reliability models. Economic impact is evaluated using Levelized Cost of Electricity calculations and project financial assessments followed by a sensitivity analysis. It’s found that distributed power electronics in PV systems provide higher energy yield, reduced safety risk, higher reliability and lower system down-time due to failures compared to central and string inverters. String inverters and power optimizer systems are more economically feasible in 1 MWp scale. Finally, it’s concluded that the presented methodology furnishes a proper techno-economic comparison for different PV inverter architectures. en_US
dc.language.iso en en_US
dc.subject ELECTRICAL ENGINEERING-Dissertations en_US
dc.subject ELECTRICAL INSTALLATION-Dissertations en_US
dc.subject PHOTOVOLTAIC CELLS en_US
dc.subject SOLAR POWER en_US
dc.subject SOLAR POWER PLANTS-Sri Lanka en_US
dc.subject PHOTOVOLTAIC INVERTORS-Architecture en_US
dc.subject ELECTRIC POWER-Optimization en_US
dc.subject CENTRAL INVERTERS en_US
dc.subject MICRO INVERTERS en_US
dc.subject STRING INVERTERS en_US
dc.title A Methodology for techno-economic comparison of PV inverter structure topologies : en_US
dc.title.alternative a case study on proposed 1 MWP solar power development scheme in Sri Lanka en_US
dc.type Thesis-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.degree MSc in Electrical Installation en_US
dc.identifier.department Department of Electrical Engineering en_US
dc.date.accept 2020
dc.identifier.accno TH4230 en_US


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